<template>
  <div id="app">
    <!-- 占位符 -->
     
    <!-- 一个router-view只能匹配一层路由 -->
      <router-view/>
  
 
  
   
  </div>
</template>

<script>

//引入的./components/7-13作业/overAll




export default {
  name:"App",
 
}
</script>

<style>
* {
  margin: 0;
  padding: 0;
  list-style: none;
}

html,body,#app{ 
  height: 100%;
}
.h100{
  height:100%
}
header{
  text-align: center;
  line-height: 46px;
}
main{
  flex:1
}

.active{
    color: red;
}
</style>
